Home / 100,771.32-151,182.95-72,341.23

Finding the Fourth Proportional to 100,771.32, 151,182.95 and 72,341.23

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Solution

The fourth proportional to 100,771.32, 151,182.95 and 72,341.23 is: 108,530.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,771.32 : 151,182.95 = 72,341.23 : x
  2. Step 2: Convert to fraction form
    100,771.32/151,182.95 = 72,341.23/x
  3. Step 3: Cross multiply
    100,771.32x = 151,182.95 × 72,341.23
  4. Step 4: Simplify right side
    100,771.32x = 10,936,760,656.58
  5. Step 5: Solve for x
    x = 10,936,760,656.58/100,771.32
  6. Step 6: Final answer
    x = 108,530.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.